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Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/gadget/fsl_qe_udc.c101
-rw-r--r--drivers/usb/gadget/fsl_qe_udc.h1
2 files changed, 68 insertions, 34 deletions
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index e9400e62f17..d9aad6894b3 100644
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -1138,7 +1138,7 @@ static int qe_ep_tx(struct qe_ep *ep, struct qe_frame *frame)
}
}
-/* when an bd was transmitted, the function can *
+/* when a bd was transmitted, the function can
* handle the tx_req, not include ep0 */
static int txcomplete(struct qe_ep *ep, unsigned char restart)
{
@@ -1174,7 +1174,7 @@ static int txcomplete(struct qe_ep *ep, unsigned char restart)
return 0;
}
-/* give a frame and a tx_req,send some data */
+/* give a frame and a tx_req, send some data */
static int qe_usb_senddata(struct qe_ep *ep, struct qe_frame *frame)
{
unsigned int size;
@@ -1797,11 +1797,6 @@ static int qe_ep_set_halt(struct usb_ep *_ep, int value)
goto out;
}
- if (ep->epnum != 0) {
- status = 0;
- goto out;
- }
-
udc = ep->udc;
/* Attempt to halt IN ep will fail if any transfer requests
* are still queue */
@@ -1821,7 +1816,7 @@ static int qe_ep_set_halt(struct usb_ep *_ep, int value)
udc->ep0_dir = 0;
}
out:
- dev_vdbg(udc->dev, " %s %s halt stat %d\n", ep->ep.name,
+ dev_vdbg(udc->dev, "%s %s halt stat %d\n", ep->ep.name,
value ? "set" : "clear", status);
return status;
@@ -1953,22 +1948,51 @@ static void ownercomplete(struct usb_ep *_ep, struct usb_request *_req)
kfree(req);
}
-static void ch9getstatus(struct qe_udc *udc, u16 value, u16 index,
- u16 length)
+static void ch9getstatus(struct qe_udc *udc, u8 request_type, u16 value,
+ u16 index, u16 length)
{
- u16 usb_status = 0; /* fix me to give correct status */
-
+ u16 usb_status = 0;
struct qe_req *req;
struct qe_ep *ep;
int status = 0;
ep = &udc->eps[0];
+ if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
+ /* Get device status */
+ usb_status = 1 << USB_DEVICE_SELF_POWERED;
+ } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
+ /* Get interface status */
+ /* We don't have interface information in udc driver */
+ usb_status = 0;
+ } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) {
+ /* Get endpoint status */
+ int pipe = index & USB_ENDPOINT_NUMBER_MASK;
+ struct qe_ep *target_ep = &udc->eps[pipe];
+ u16 usep;
+
+ /* stall if endpoint doesn't exist */
+ if (!target_ep->desc)
+ goto stall;
+
+ usep = in_be16(&udc->usb_regs->usb_usep[pipe]);
+ if (index & USB_DIR_IN) {
+ if (target_ep->dir != USB_DIR_IN)
+ goto stall;
+ if ((usep & USB_THS_MASK) == USB_THS_STALL)
+ usb_status = 1 << USB_ENDPOINT_HALT;
+ } else {
+ if (target_ep->dir != USB_DIR_OUT)
+ goto stall;
+ if ((usep & USB_RHS_MASK) == USB_RHS_STALL)
+ usb_status = 1 << USB_ENDPOINT_HALT;
+ }
+ }
req = container_of(qe_alloc_request(&ep->ep, GFP_KERNEL),
struct qe_req, req);
req->req.length = 2;
- req->req.buf = udc->nullbuf;
- memcpy(req->req.buf, (u8 *)&usb_status, 2);
+ req->req.buf = udc->statusbuf;
+ *(u16 *)req->req.buf = cpu_to_le16(usb_status);
req->req.status = -EINPROGRESS;
req->req.actual = 0;
req->req.complete = ownercomplete;
@@ -1978,10 +2002,11 @@ static void ch9getstatus(struct qe_udc *udc, u16 value, u16 index,
/* data phase */
status = qe_ep_queue(&ep->ep, &req->req, GFP_ATOMIC);
- if (status) {
- dev_err(udc->dev, "Can't respond to getstatus request \n");
- qe_ep0_stall(udc);
- }
+ if (status == 0)
+ return;
+stall:
+ dev_err(udc->dev, "Can't respond to getstatus request \n");
+ qe_ep0_stall(udc);
}
/* only handle the setup request, suppose the device in normal status */
@@ -2007,7 +2032,8 @@ static void setup_received_handle(struct qe_udc *udc,
if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK))
!= (USB_DIR_IN | USB_TYPE_STANDARD))
break;
- ch9getstatus(udc, wValue, wIndex, wLength);
+ ch9getstatus(udc, setup->bRequestType, wValue, wIndex,
+ wLength);
return;
case USB_REQ_SET_ADDRESS:
@@ -2021,7 +2047,7 @@ static void setup_received_handle(struct qe_udc *udc,
case USB_REQ_CLEAR_FEATURE:
case USB_REQ_SET_FEATURE:
/* Requests with no data phase, status phase from udc */
- if ((setup->bRequestType & USB_TYPE_MASK)
+ if ((setup->bRequestType & USB_TYPE_MASK)
!= USB_TYPE_STANDARD)
break;
@@ -2055,7 +2081,7 @@ static void setup_received_handle(struct qe_udc *udc,
if (setup->bRequestType & USB_DIR_IN) {
udc->ep0_state = DATA_STATE_XMIT;
udc->ep0_dir = USB_DIR_IN;
- } else{
+ } else {
udc->ep0_state = DATA_STATE_RECV;
udc->ep0_dir = USB_DIR_OUT;
}
@@ -2160,13 +2186,11 @@ static int tx_irq(struct qe_udc *udc)
bd = ep->c_txbd;
if (!(in_be32((u32 __iomem *)bd) & T_R)
&& (in_be32(&bd->buf))) {
- /* Disable the TX Interrupt */
- /*confirm the transmitted bd*/
+ /* confirm the transmitted bd */
if (ep->epnum == 0)
res = qe_ep0_txconf(ep);
else
res = qe_ep_txconf(ep);
- /* Enable the TX Interrupt */
}
}
}
@@ -2205,7 +2229,6 @@ static irqreturn_t qe_udc_irq(int irq, void *_udc)
irqreturn_t status = IRQ_NONE;
unsigned long flags;
-
spin_lock_irqsave(&udc->lock, flags);
irq_src = in_be16(&udc->usb_regs->usb_usber) &
@@ -2520,10 +2543,9 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
udc_controller->gadget.dev.release = qe_udc_release;
udc_controller->gadget.dev.parent = &ofdev->dev;
-
- /* EP:intialization qe_ep struct */
+ /* initialize qe_ep struct */
for (i = 0; i < USB_MAX_ENDPOINTS ; i++) {
- /*because the ep type isn't decide here so
+ /* because the ep type isn't decide here so
* qe_ep_init() should be called in ep_enable() */
/* setup the qe_ep struct and link ep.ep.list
@@ -2536,7 +2558,7 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
if (ret)
goto err2;
- /* create a buf for ZLP send */
+ /* create a buf for ZLP send, need to remain zeroed */
udc_controller->nullbuf = kzalloc(256, GFP_KERNEL);
if (udc_controller->nullbuf == NULL) {
dev_dbg(udc_controller->dev, "cannot alloc nullbuf\n");
@@ -2544,6 +2566,13 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
goto err3;
}
+ /* buffer for data of get_status request */
+ udc_controller->statusbuf = kzalloc(2, GFP_KERNEL);
+ if (udc_controller->statusbuf == NULL) {
+ ret = -ENOMEM;
+ goto err4;
+ }
+
udc_controller->nullp = virt_to_phys((void *)udc_controller->nullbuf);
if (udc_controller->nullp == DMA_ADDR_INVALID) {
udc_controller->nullp = dma_map_single(
@@ -2568,20 +2597,21 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
if (ret) {
dev_err(udc_controller->dev, "cannot request irq %d err %d \n",
udc_controller->usb_irq, ret);
- goto err4;
+ goto err5;
}
ret = device_add(&udc_controller->gadget.dev);
if (ret)
- goto err5;
+ goto err6;
dev_info(udc_controller->dev,
- "QE/CPM USB controller initialized as device\n");
+ "%s USB controller initialized as device\n",
+ (udc_controller->soc_type == PORT_QE) ? "QE" : "CPM");
return 0;
-err5:
+err6:
free_irq(udc_controller->usb_irq, udc_controller);
-err4:
+err5:
if (udc_controller->nullmap) {
dma_unmap_single(udc_controller->gadget.dev.parent,
udc_controller->nullp, 256,
@@ -2592,6 +2622,8 @@ err4:
udc_controller->nullp, 256,
DMA_TO_DEVICE);
}
+ kfree(udc_controller->statusbuf);
+err4:
kfree(udc_controller->nullbuf);
err3:
ep = &udc_controller->eps[0];
@@ -2642,6 +2674,7 @@ static int __devexit qe_udc_remove(struct of_device *ofdev)
udc_controller->nullp, 256,
DMA_TO_DEVICE);
}
+ kfree(udc_controller->statusbuf);
kfree(udc_controller->nullbuf);
ep = &udc_controller->eps[0];
diff --git a/drivers/usb/gadget/fsl_qe_udc.h b/drivers/usb/gadget/fsl_qe_udc.h
index b4c07a22e8e..31b2710882e 100644
--- a/drivers/usb/gadget/fsl_qe_udc.h
+++ b/drivers/usb/gadget/fsl_qe_udc.h
@@ -349,6 +349,7 @@ struct qe_udc {
u32 c_end;
u8 *nullbuf;
+ u8 *statusbuf;
dma_addr_t nullp;
u8 nullmap;
u8 device_address; /* Device USB address */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-12 21:17:07 +0000